Suspension and releasing of ships&#39; boats from davits



April 8, 19411 G. TAYLQR 2.237.512

SUSPENSION AND RELEASING OF SHIPS BOATS FROM DAVITS Filed NOV. 25, 1939 5 Sheets-Shet 1 Wr/7U April 8,- 1941. H. @,'TAYLQR 2,237,512

SUSPENSION AND RELEASING OF SHIPS BOATS FROM DAVITS Filed Nov. 25, 1939 3 Smets-Sheet 2 April 8, 1941. vM Gi TAYLQR 2.237.512

SSPENSION AND RELEASING OF SHIPS BOATS FROM DAVITS Filed Nov. 25, 1959 5 Sheets-Sheet 5 Hum/PAY?) Georgcjlgr Patented Apr. 8, 1941 UNITED STATES rarsN'r, OFFICE SUSPENSION AND RELEASING OF SHIPS BOATS FROM DAvITs Humphrey George Taylor, Lower Penn, near i `Wolverhampton,England Application November 25, 1 939, SieriralvNo.` 306,155` f In Great Britain November 11, 1938 y 3 Claims. (Cl.4 SQL-22) It is usual present day practice to provide davits with a two-fold fall in respect of each end ofthe boat which is being supported, that is to say each fall passes from its respective winch over' any necessary` sheaves to a floating block passing under a sheave thereof and from thence back to a fixed point of the davit,`the floating block being detachably connected to the boat at the respective end thereof. When a boat has been lowered into the water and the floating blocks cast off,

they constitute a considerable source of danger because they are relatively heavy and the'falls are relatively long when run out, so that the blocks can swing a considerable distance laterally and come back with considerable speed. This is a source of inconvenience and danger to the occupants of the boat, especially when there `is a considerable swell, as the iioating blocks may come back level with the heads or other parts of the occupants. The objects of this invention are to "1. 2 and 4i pivoted between the Cheeks ai, a1 and eliminate'this inconvenience and danger and to render the detachment of the boat `from itsfalls easier than has heretofore been the case.

'The present invention relates not only to the suspension of ships boats from double falls but "7 also to the suspension of such boats from single falls, that is to say to cases in which each single fall terminates at its lower end in a loop passing round a sheave or round a pin, stud or hook carried by a block.

According to this invention each block, instead of being permanently connected with the fall, Vis connected to the boat at the respective end thereof, and is adapted to extend upwardly from such connection, its sheave, pin, stud or hook receiving the loop of the respective fall, but in a manner which allows of the fall being quickly cast ofi" therefrom. y

As will be readily understood, the loop of the fall will remain in engagement with the sheave, pin, stud or hook, while the weight of the boat comes upon it; but, as soon as the boat takes the water, the loop becomes slack, and, if there is then a clear space left at one side of the sheave, pin, stud or hook, the loop can be readily disengaged.

Convenient embodiments of the invention are described with reference to the drawings herewith in which- Figure l is a side elevation of one of the blocks.

Figure 2 is a View of the block as seen looking in the direction of the arrow of Figure l.

Figure 3 is a fragmentary View, to an enlarged scale, to illustrate more clearly the form of the catch piece.

Figure 4 .isaview in side elevation `of theblock to a Vreduced scale, and showing its attachment to the boat, the latter being shown partly broken away/.

l Figure 5 isa view of the block in end elevation showing its attachment to the boat, and showing also one ofthe davit arms and one of the falls. In this .'view the boat is shown in transverse section.

. Figure 6 is a view to thesame scale as Figures 1 and 2, butwshowing in side elevation the appli cation of the invention in the case of single falls.

Referring to Figures l to 5, A is the main portion of the block comprising two side plates A1, A1

' which. are each bifurcated to form two upwardly extending cheeks a, a1 with a space a2 between. VThe cheeks a extend upwardly in the same planes as ,the lower parts of the side plates A1; but the cheeks al, a1 are widened out as shown in Figures with an abutment formed by an edge e of a shelf E which is rigid with, and extends across, between the cheeks al, al. When the bracket is in the position shown in the drawings the catch piece holds it in such position.

The catch piece has a handle b5 which, when raised, serves ot release the hook b3 from the shelf E. Then, if the fall is slack, as it is when the boat reaches the water, the bracket can be swung outwardly moving the sheave C away from the cheeks a, and leaving a space to allow of the complete removal of the loop of the fall from the sheave.

It will be seen that the pivot b of the bracket is well beyond the plane of the inner edges of the free side of the sheave, hence the pull of the fall always tends to keep the bracket in the position shown in the drawings.

The bracket is extended downwardly and to the opposite side of the pivot from the cheeks a1; and to such extension is pivoted the upper end of a link F which is pivoted at its foot to a pedal lever G, the pressing down of which acts to swing the bracket B inwardly.

I-I is a safety bar passed through the cheeks a1, a1, and immediately behind the bracket B and also behind the catch piece to ensure that the bracket cannot be swung back until the bar H has been removed.

It will be seen by reference to Figures 4 and 5, that the block is pivoted at its lower end to the keel plate J of the boat and it is held vertical by two stay bars K and M.

At the upper ends of the cheeks a is a cross bar N adapted to engage over the usual hook p on the end of the davit arm P. The bar N is automatically disengaged from the hook when the davit arm swings outboard.

Q is a transverse bar extending between the sides A1, A1 and serving as a stop to the inward movement of the bracket B.

When it is desired to raise the boat from the water the loop of the fall is passed between the cheeks -a and a1. The pedal G is then pressed down causing the bracket to swing into the position shown in the drawings when the catch piece b2 will automatically engage with the shelf E and the sheave will be within the loop. The safety bar H may then be inserted to secure the bracket in its inmost position.

In the modication shown in Figure 6, the block is adapted for use with single falls. In this case each fall end is spliced at its end to form an eye d1 in which is placed a thimble d2. The bracket R is, in this case, provided with a hook S adapted, when the bracket is swung inwardly, to engage in the thimb-le d2. T, in this case, has a hook t which engages over a vertical ledge of a shelf t1 extending between the sides a of the block. The pedal device W for swinging the block is similar to that described with reference to the previous gures.

Having fully described my invention what I claim and desire to secure by Letters Patent is:

1. Means for suspension and release of ships boats comprising a block at each end of the boat, means whereby said block may be connected to the boat, means on said block to engage with a loop of the respective fall and a part pivoted to said block and carrying said engaging means and adapted to be swung outwardly from a xed The catch piece part of the block to permit of the said fall being cast off from said engaging means when the boat takes the water, said pivoted part being carried across the plane of suspension of the block and beneath the said engaging means and pivoted to the xed part of the block at a point which is on the other side of the said plane of suspension, whereby the pull of the fall tends to keep the said pivoted part in its inmost position.

2. Means for suspension and release of ships boats comprising a block at each end of the boat, means whereby said block may be connected to the boat, a sheave of said block to engage with a loop of the respective fall and a part pivoted to the said block and carrying said sheave and adapted to be swung outwardly from a xed part of the block to permit of the said fall being castol from the said sheave when the boat takes the water, said pivoted part being carried across the plane of suspension of the block and beneath the said sheave and pivoted to the fixed part of the block at a point which is on the other side of the said plane of suspension, whereby the pull of the fall tends to keep the said pivoted part in its inmost position.

3. Means for suspension and release of ships' boats comprising a block at each end of the boat, means whereby said block may be connected to the boat, means on said block to enga-ge with a loop of the respective fall and a part pivoted to said block and carrying said engaging means and adapted to be swung outwardly from a fixed part of the block to permit of the said fall being cast off from said engaging means when the boat takes the water, said pivoted part being carried across the plane of suspension of the block and beneath the said engaging means and pivoted to the xed part of the block at a point which is on the other side of the said plane of suspension, whereby the pull of the fall tends to keep the said pivoted part in its inmost position, and a stop to limit the inward movement of the said pivoted part.

HUMPHREY GEORGE TAYLOR. 

